W/Harness Inspection

P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Signal Circuit Inspection" procedure.

Signal Circuit Inspection

1. Check open in harness.
(1) IG "OFF".
(2) Disconnect MAPS connector.
(3) IG "ON" & ENG "OFF"
(4) Measure voltage between terminal 1 of MAPS harness connector and chassis ground.
A. Specification : Approx. 5 V




(5) Is the measured voltage within specification?
YES
1) Go to "Check short to battery in harness" as follows.
NO
1) Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.
2. Check short to battery in harness
(1) IG "OFF".
(2) Disconnect MAPS and ECM connector.
(3) Measure resistance between terminal 1 and 2 MAPS harness connector.
A. Specification : Infinite




(4) Is the measured resistance within specification?
YES
1) Go to "Ground Circuit Inspection" procedure.
NO
1) Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

1. IG "OFF".
2. Disconnect MAPS connector.
3. Measure resistance between terminal 4 of MAPS harness connector and chassis ground.
A. Specification : Below 1 Ohms




4. Is the measured resistance within specification?
YES
1) Go to "Component Inspection" procedure.
NO
1) Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.